Changes of pile-side friction and pile-end friction in horizontal seismic vibration process of piles foundation in liquefiable soil
HUANG Zhan-fang1 LIU Yong-qiang1 BAI Xiao-hong2
1 College of Construction, Shandong University of Technology ,Zibo255049, China;
2 School of Architecture and Civil Engineering, Taiyuan University of Technology , Taiyuan 030024, China
The variation law of pile-side friction and pile-end friction in horizontal seismic vibration process of piles foundation in liquefiable sandy soil was studied. Firstly, through shaking table tests, the feasibility of MIDAS-GTS finite element software was verified. Through FE analysis, the settlement time histories of the piles foundation under 3D, 3.5D and 4D working conditions and its load-settlement (Q-S) curves during different vibration time durations were obtained. Based on relevant literatures, the curves were analyzed and the pile-side friction and pile-end friction were calculated. When the piles foundation was in a liquefiable soil layer, the modified formula for the vertical force-bearing capacity of the piles foundation under dynamic load was proposed to provide a reference for the relevant design.
黄占芳 1 刘永强1 白晓红2. 液化土群桩基础水平地震力振动过程中桩侧摩阻力和桩端摩阻力的变化分析[J]. 振动与冲击, 2017, 36(24): 136-141.
HUANG Zhan-fang1 LIU Yong-qiang1 BAI Xiao-hong2. Changes of pile-side friction and pile-end friction in horizontal seismic vibration process of piles foundation in liquefiable soil. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(24): 136-141.
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